Thermopower in epitaxial YBa sub 2 Cu sub 3 O sub 7 thin films

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.9374· OSTI ID:5372506

Ma, H; Xiong, G; Wang, L; Wang, S; Zhang, H; Tong, L; Liang, S; Yan, S ^[1]

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1. Department of Physics, Peking University, Beijing 100871, People's Republic of China (CN)

Thermopower measurements are reported in several perfect epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} thin films above 80 K. A prominent peak was observed both in the in-plane and out-of-plane thermopower ({ital S}{sub {ital ab}} and {ital S}{sub {ital c}}) and it is associated with the perfectness of the crystal structure of the sample. Above 140 K, {ital S}{sub {ital ab}} is almost temperature independent with small positive value (about 0.2 {mu}V/K), and {ital S}{sub {ital c}} increases with linear temperature dependence. The slope {ital dS}{sub {ital c}}/dT is about 2.6{times}10{sup {minus}2} {mu}V/K{sup 2} which is much greater than expected in a metal.

• OSTI ID: 5372506
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRICAL PROPERTIES
EPITAXY
FILMS
LOW TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SPUTTERING
SUPERCONDUCTING FILMS
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES